import sys
input = sys.stdin.readline
n=int(input())
count = 0

L=list(range(400,2001,200))
val=len(L)
ans = 0
for i in range(val-1):
    if L[i]<=n<L[i+1]:
        ans=8-count
        break
    else:
        count+=1
print(ans) import sys sys input = sys.stdin.readline input sys.stdin.readline sys.stdin sys stdin readline n=int(input()) n int(input()) int input() input count = 0 count 0 L=list(range(400,2001,200)) L list(range(400,2001,200)) list range(400,2001,200) range 400 2001 200 val=len(L) val len(L) len L ans = 0 ans 0 for i in range(val-1):
    if L[i]<=n<L[i+1]:
        ans=8-count
        break
    else:
        count+=1 i range(val-1) range val-1 val 1 if L[i]<=n<L[i+1]:
        ans=8-count
        break
    else:
        count+=1 L[i]<=n<L[i+1] L[i]<=n L[i] L i n L[i+1] L i+1 i 1 ans=8-count ans 8-count 8 count break count+=1 count 1 print(ans) print ans val=len(L) len(L) val L=list(range(400,2001,200)) list(range(400,2001,200)) L ans=8-count 8-count ans count = 0 0 count input = sys.stdin.readline sys.stdin.readline input ans = 0 0 ans n=int(input()) int(input()) n count+=1 1 count
import sys
input = sys.stdin.readline
n=int(input())
count = 0

L=list(range(400,2001,200))
val=len(L)
ans = 0
for i in range(val-1):
    if L[i]<=n<L[i+1]:
        ans=8-count
        break
    else:
        count+=1
print(ans)
